ΔE 9.8, close: similar, with a visible difference side by side. Cam. Black Green is a little darker, more muted than Violet.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Cam. Black Green is a little darker, more muted than Violet.
The same difference applies the other way round: Violet is a little lighter, more saturated.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Violet on the colour wheel See Cam. Black Green on the colour wheel
All matches: Violet equivalents · Cam. Black Green equivalents